Node 0.11.4 was released last week. The major dependencies have been upgraded (npm, v8, c-ares), and there's a change in behaviour for timers:
setImmediate has been changed to process the full queue on each turn.
There's also a cool graph version:
The project was written by Rod Vagg and uses restify.
Speaking of restify, Kent Safranski sent in Node-FSAPI (GitHub: Fluidbyte / Node-FSAPI), which is a project to provide a RESTful server for interacting with remote file systems. It supports three layers of security: URL keys, IP restriction, and HTTPS.
The client implementation supports Ajax, so from what I can tell you could use it as a browser-based solution for storing files.